The jogger ran a mile and a half to get home to call police.

A woman who was out for a jog in Stamford early Friday morning was sexually assaulted multiple times after a man grabbed her, then had to run more than a mile home to report the attack to police because she did not have a phone with her.

The 30-year-old woman was jogging at 5:20 a.m., when a man who claimed to have a knife came up from behind her, grabbed her off the track at Cove Island Park and sexually assault her, police said.

Investigators said this was a prolonged attacked and the assailant dragged the victim to the water line, where he sexually assaulted her again.

The woman did not have her phone because she was running and had to run a mile and half to get home and contact police, according to authorities. When the woman spoke to police, she said she was afraid the attacker was going to drown her.

Police are searching the scene and ask anyone who saw a man matching the assailant’s description in Cove Island Park between 5 a.m. and 6 a.m. today to call the Stamford Police Detective bureau at 203-977-4417.

Anyone who saw the man in the park area in the last few days is urged to call police.